CN103604180B - The evaporative cooling of integration Winter-summer dual purpose combines air-conditioner set with mechanical refrigeration - Google Patents

Abstract

The combined winter and summer dual-purpose evaporative cooling and mechanical refrigeration combined air-conditioning unit disclosed by the present invention includes two independent air exhaust channels and air supply channels separated in the unit shell, a mechanical refrigeration unit is arranged in the air supply channel, and the exhaust channel An evaporative cooling unit is arranged inside, and the mechanical refrigeration unit and the evaporative cooling unit are connected through a pipe network. The combined air-conditioning unit of the present invention adopts heat pipes to recover cold and heat of exhaust air, and uses cooling water to provide free cooling to pre-cool fresh air, fully exerting the leading role of evaporative cooling, and making the air-conditioning unit have the advantages of environmental protection, high efficiency and energy saving.

Description

Integrated winter and summer dual-purpose evaporative cooling and mechanical refrigeration combined air conditioning unit

technical field

The invention belongs to the technical field of air-conditioning equipment, and in particular relates to an integrated winter-summer dual-purpose evaporative cooling and mechanical refrigeration combined air-conditioning unit.

Background technique

The existing air-conditioning unit combined with evaporative cooling and mechanical refrigeration has a large equipment volume, and a separate cooling tower is required. Due to the configuration of the unit's own equipment, the air conditioning unit can only provide cooling in summer under normal circumstances, and cannot meet the heating demand in winter.

Contents of the invention

The purpose of the present invention is to provide an integrated winter and summer dual-purpose evaporative cooling and mechanical refrigeration combined air conditioning unit. Through reasonable equipment layout, the integrated setting of the unit is realized. The heat pipe is used in the unit to recover the cold and heat of the indoor exhaust air. The refrigerant directly expands to exchange heat and moisture with the treated air, and the winter heating mode is realized through the throttle valve.

The technical solution adopted in the present invention is that the integrated winter and summer dual-purpose evaporative cooling and mechanical refrigeration combined air conditioning unit includes two independent air exhaust passages and air supply passages separated in the unit shell, and mechanical refrigeration is arranged in the air supply passage. For the unit, an evaporative cooling unit is arranged in the exhaust air passage, and the mechanical refrigeration unit and the evaporative cooling unit are connected through a pipe network.

The present invention is also characterized in that,

The side wall of the housing near the bottom of the air supply channel is provided with a fresh air outlet. In the air supply channel, a cooling water coil, one end of the heat pipe, an evaporator and a water baffle a are arranged in sequence from bottom to top, and the water baffle a corresponds to An air supply port is arranged on the wall of the top shell, a blower fan is arranged in the air supply port, and a compressor is also arranged in the air supply channel.

The side wall of the shell near the bottom of the exhaust channel is provided with an exhaust inlet, and the other end of the heat pipe leads into the exhaust channel. In the exhaust channel, on the upper part of the other end of the heat pipe, a condenser, a nozzle, Water baffle b, the top shell wall corresponding to water baffle b is provided with an exhaust outlet, and an exhaust fan is arranged in the exhaust outlet, and a water collecting tank is arranged at the bottom of the exhaust air passage, and the water collecting tank is connected with the cooling system in turn through the pipeline and the circulating water pump. The water coil is connected with the nozzle, and the condenser is connected with the throttle valve, the evaporator and the compressor in sequence to form a closed circuit.

The beneficial effects of the present invention are:

1. The outdoor fresh air enters from the fresh air outlet at the lower part of the unit. After being cooled by wet cooling such as the cooling water coil and further cooled by the cold end of the heat pipe, the treated air enters the evaporator and exchanges heat and moisture with the refrigerant coil to dehumidify. After the cooling treatment, it is sent to the working area through the blower and the air outlet through the water baffle a. At the same time, the indoor exhaust air enters from the exhaust inlet at the lower part of the unit, and exchanges heat and moisture with the cooling water sprayed from the upper part to reduce the water temperature. Finally taken away and discharged.

2. The combined air conditioner unit of the present invention adopts the spray evaporation method and the heat pipe to recover the cooling capacity of the indoor exhaust air, and then performs iso-humid cooling pretreatment on the fresh air. There is no contact between indoor exhaust air and fresh air, which completely eliminates air cross-contamination and ensures clean and healthy air quality.

3. The combined air-conditioning unit of the present invention adopts the form of direct expansion of the refrigerant, which saves the cooling water system and realizes the energy-saving effect. At the same time, the compressor and the condenser are integrated, which makes the structure of the unit compact and reduces the occupied area.

4. In the combined air conditioner unit of the present invention, in winter, the cold end and the hot end of the heat pipe act oppositely, so that the outdoor fresh air can be preheated. The fresh air is heated, and finally, it is sent into the room through the blower and the air outlet.

Description of drawings

Fig. 1 is a structural schematic diagram of an air-conditioning unit combined with evaporative cooling and mechanical refrigeration according to the present invention.

In the figure, 1. Fresh air outlet, 2. Cooling water coil, 3. Heat pipe, 4. Evaporator, 5. Throttle valve, 6. Water baffle a, 7. Compressor, 8. Circulating water pump, 9. Collector Water tank, 10. exhaust air inlet, 11. condenser, 12. nozzle, 13. water baffle b, 14. exhaust air outlet, 15. exhaust fan, 16. air supply port, 17. air supply fan.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The relative position and structure of the combined winter and summer dual-purpose evaporative cooling and mechanical refrigeration combined air-conditioning unit of the present invention is shown in FIG. 1 .

It includes two independent exhaust air channels and air supply channels separated in the unit shell. A mechanical refrigeration unit is installed in the air supply channel, and an evaporative cooling unit is installed in the exhaust air channel. The mechanical refrigeration unit and the evaporative cooling unit are connected through a pipe network.

The fresh air outlet 1 is set on the side wall of the shell near the bottom of the air supply channel, and the cooling water coil 2, one end of the heat pipe 3, the evaporator 4, the water baffle a6, and the water baffle are arranged in the air supply channel in sequence from bottom to top The wall of the top shell corresponding to a6 is provided with an air supply port 16, and a blower fan 17 is provided in the air supply port 16, and a compressor 7 is also provided in the air supply channel.

The side wall of the shell near the bottom of the exhaust channel is provided with an exhaust inlet 10, and the other end of the heat pipe 3 leads into the exhaust channel, and in the exhaust channel, on the upper part of the other end of the heat pipe 3, a condenser is arranged sequentially from bottom to top. 11. The nozzle 12, the water baffle b13, the top shell wall corresponding to the water baffle b13 is provided with an exhaust outlet 14, and an exhaust fan 15 is arranged in the exhaust outlet 14, and a water collection box 9 is arranged at the bottom of the exhaust passage. The water tank 9 is sequentially connected with the cooling water coil 2 and the nozzle 12 through the pipeline and the circulating water pump 8, and the condenser 11 is sequentially connected with the throttle valve 5, the evaporator 4 and the compressor 7 to form a closed circuit.

The fresh air enters the unit through the fresh air outlet 1, and after being pre-cooled by the cooling water coil 2, it is further wet-cooled by the cold end of the heat pipe 3.

The mechanical refrigeration in the unit adopts the refrigerant direct expansion type, and the evaporator 4 is arranged between the heat pipe 3 and the water baffle a6 to dehumidify and cool the air.

The compressor 7 is arranged in the air supply channel of the unit.

A water collecting tank 9 is arranged in the air exhaust channel of the unit, and the water in the water tank communicates with the cooling water coil 2 and the nozzle 12 through the circulating water pump 8 and the pipeline.

The condenser 11 is disposed between the nozzle 12 and the heat pipe 3 . By spraying water to the heat pipe 3 and the condenser 11 and evaporating, the heat is taken away by the exhaust fan 15 .

The 3 pairs of heat pipes can realize cooling recovery in summer and heat recovery in winter.

The fresh air and exhaust air after heat and humidity treatment need to separate the water droplets carried in the air through the water separation function of the water baffle.

The heat pipe is used in the unit to recover the cold and heat of the exhaust air, and the fresh air is pre-cooled by free cooling water. All mechanical refrigeration equipment and heat pipes are set as an integrated structure.

The working process of the combined air-conditioning unit of the present invention:

Summer: The outdoor fresh air enters from the fresh air outlet 1 at the lower part of the unit. After being cooled by wet cooling such as the cooling water coil 2, the temperature is further cooled by the cold end of the heat pipe 3, and the treated air enters the evaporator 4. The plate a6 is sent into the working area through the air blower 17 and the air supply port 16. At the same time, the indoor exhaust air enters from the exhaust air inlet 10 at the lower part of the unit, exchanges heat and moisture with the cooling water sprayed from the upper part, and lowers the water temperature. 15 to finally take away its heat and discharge it.

Winter: on the one hand, the heat pipe 3 is used to recover heat from the exhaust air and preheat the fresh air; on the other hand, the throttle valve 5 is used to change the flow direction of the refrigerant to achieve heating of the air to meet the heating demand in winter.

Claims (1)

1. integrated Winter-summer dual purpose evaporative cooling combines air-conditioner set with mechanical refrigeration, it is characterized in that, comprise be separated in machine unit shell two independently air exhaust passage and air-supply passages, mechanical refrigeration unit is provided with in described air-supply passage, be provided with evaporative cooling unit in described air exhaust passage, be connected by pipe network between mechanical refrigeration unit with evaporative cooling unit;

Described air-supply passage is provided with fresh wind port (1) in the housing sidewall of bottom, in described air-supply passage, be disposed with cooling water coil (2), heat pipe (3) one end, evaporimeter (4) and water fender a (6) from top to bottom, the top shell wall that described water fender a (6) is corresponding is provided with air outlet (16), be provided with pressure fan (17) in described air outlet (16), in described air-supply passage, be also provided with compressor (7);

Described air exhaust passage is provided with air draft entrance (10) in the housing sidewall of bottom, described heat pipe (3) other end passes in air exhaust passage, in described air exhaust passage, the top of heat pipe (3) other end, be disposed with condenser (11) from top to bottom, nozzle (12), water fender b (13), the top shell wall that described water fender b (13) is corresponding is provided with wind exhausting outlet (14), exhaust blower (15) is provided with in described wind exhausting outlet (14), header tank (9) is provided with in described air exhaust passage, described header tank (9) is connected with nozzle (12) with cooling water coil (2) with water circulating pump (8) successively by pipeline, described condenser (11) and choke valve (5), evaporimeter (4) and compressor (7) connect and compose closed-loop path successively, form direct-expansion-type mechanical refrigeration,

Described evaporimeter (4) is arranged between heat pipe (3) and water fender a (6), for carrying out dehumidification cooling processing to air; Described condenser (11) is arranged between nozzle (12) and heat pipe (3), utilize nozzle (12) opposite heat tube (3) and the evaporation of condenser (11) trickle, take away its heat by exhaust blower (15).